Marc-Andre Lemburg added the comment:
The alias was added by Hye-Shik Chang:
http://hg.python.org/cpython-fullhistory/annotate/887ce39f95f2/Lib/encodings/aliases.py#198
I've added him to the nosy list.
If the alias don't match, we'd have to add a codec for the mismatching encoding
to maintain
New submission from R. David Murray:
When Microsoft handles Korean text, it uses its own code page, cp949, which is
a superset of ks_c-5601-1987. But when talking to the rest of the world, it
claims that the character set name is ks_c-5601-1987. This means that text
claimed to be in ks_c-560
